package com.itheima.reggie.service.impl;

import com.alibaba.druid.support.spring.stat.BeanTypeAutoProxyCreator;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

@Service
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {
    @Autowired
    DishFlavorService dishFlavorService;
    @Autowired
    DishService dishService;
    @Override
    @Transactional
    public void saveWithFlavor(DishDto dishDto) {
        //保存菜品的基本信息到菜品表dish
        this.save(dishDto);
        Long dishId = dishDto.getId();//菜单id
        //菜单口味
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map((item) ->{
            item.setDishId(dishId);
            return item;
        }).collect(Collectors.toList());
        //保存菜品口味数据到菜品表dish_flavor
        dishFlavorService.saveBatch(flavors);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     */
    @Override
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本信息，从dish表查询
        Dish dish = this.getById(id);
        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish,dishDto);
        //查询当前菜品对应的口味信息，从dish_flavor表查询
        LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> flavors = dishFlavorService.list(lambdaQueryWrapper);
        dishDto.setFlavors(flavors);
        return dishDto;
    }

    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表基本信息
        this.updateById(dishDto);
        //清理当前菜品对应口味数据---dish_flavor表的delete操作
        LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(DishFlavor::getDishId,dishDto.getId());
        dishFlavorService.remove(lambdaQueryWrapper);
        //添加当前提交过来的口味数据----dish_flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map((item)->{
            item.setDishId(dishDto.getId());
            return item;
        }).collect(Collectors.toList());
        dishFlavorService.saveBatch(flavors);

    }

    @Override
    public void removeWithFlavour(List<Long> ids) {
//        for(int i=0;i<ids.size();i++) {
//            LambdaQueryWrapper<Dish> dishLambdaQueryWrapper = new LambdaQueryWrapper<>();
//            LambdaQueryWrapper<DishFlavor> dishFlavorLambdaQueryWrapper = new LambdaQueryWrapper<>();
//            dishLambdaQueryWrapper.eq(Dish::getId,ids.get(i));
//            this.remove(dishLambdaQueryWrapper);
//            dishFlavorLambdaQueryWrapper.eq(DishFlavor::getDishId,ids.get(i));
//            dishFlavorService.remove(dishFlavorLambdaQueryWrapper);
//        }
        LambdaQueryWrapper<Dish> dishLambdaQueryWrapper = new  LambdaQueryWrapper<>();
        LambdaQueryWrapper<DishFlavor> dishFlavorLambdaQueryWrapper = new LambdaQueryWrapper<>();
        dishLambdaQueryWrapper.in(Dish::getId,ids);
        dishFlavorLambdaQueryWrapper.in(DishFlavor::getDishId,ids);
        dishService.remove(dishLambdaQueryWrapper);
        dishFlavorService.remove(dishFlavorLambdaQueryWrapper);
    }
}
